My birthday was on October 21st,1989 这句英文中的 on 有无必要?

My birthday is on My birthday was on October 21st,1989 这句英文中的 on 有无必要? I was given a new bike on my birthday by my father.（改为被动句） the book,____for my elder sister as a birthday present,was lost on my way home yesterday was my birthday对吗 every year on my birthday Every year on my birthday on my seventeenth birthday造句 My birthday was on last Sunday.能不能这样说?怎么改?Last Sunday was my birthday.还有没有别的改法? 用at ,in ,on填空1.he is going to telephone___five o'clock.2.My birthday is ______May 21st.3.It is always cold_____February.4.My father was there_____1984.5.he is going to arrive_____Tuesday.需解析 I was given a new bike on my birthday by farther.（改为主动句） sunday my i because it had on party was a birthday.组成一句话. My mother ____me presents on my birthday. My family _______goes _____dinner on my birthday 是on my birthday还是in my birthday I eat birthday cake on my birthday.改为否定句 my father's birthday is ______ Augustmy father's birthday is ______ nine o'clockwe have our school day ______ sundayhe was born ______ 1992 My book is boring ,how about ( ) A,you B,your C,yourself d,yoursLast Friday ,it ( )Mary's birthday,Everything was ready for the party.Mary was very ( ).When it was half( )six,she put the food ( )on the table.Mary waited( ) it was seven o'clock.Ann an